US10441828B2ActiveUtilityA1

Powered air-purifying respirator

89
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Mar 17, 2010Filed: Apr 5, 2016Granted: Oct 15, 2019
Est. expiryMar 17, 2030(~3.7 yrs left)· nominal 20-yr term from priority
Inventors:Desmond T. CurranAndrew MurphyGarry J. WalkerTerence M. SayersChristopher P. HendersonBengt Kallman
A62B 18/045A62B 18/006A62B 23/02A62B 7/10A62B 9/006G08C 17/02A62B 18/08
89
PatentIndex Score
8
Cited by
34
References
11
Claims

Abstract

A powered air purifying respirator (PAPR) for delivering a forced flow of filtered air to a wearer is disclosed. The PAPR comprises a turbo unit with turbo unit components including a fan, an electric motor, and an electronic control unit having a wireless electronic control transceiver, the fan being driven by the electric motor under the control of the electronic control unit and the electronic control unit being configured to send and receive information via the electronic control transceiver; a turbo unit power source that provides power to the turbo unit components; a turbo remote control unit having a wireless turbo remote control transceiver; at least one turbo status indicator unit, adapted to indicate a current operating status of the turbo unit and/or turbo unit components, having a wireless turbo status transceiver; wherein at least one of the turbo remote control unit and turbo status indicator unit is remote from the turbo unit, and wherein at least two of the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver are in wireless communication with each other.

Claims

exact text as granted — not AI-modified
The invention claimed is: 
     
       1. A powered air purifying respirator for delivering a forced flow of filtered air to a wearer, comprising:
 a turbo unit with turbo unit components including a fan, an electric motor, and an electronic control unit having a wireless electronic control transceiver, the fan being driven by the electric motor under control of the electronic control unit and the electronic control unit being configured to send and receive information via the electronic control transceiver; 
 a turbo unit power source that provides power to the turbo unit components; 
 a turbo remote control unit having a wireless turbo remote control transceiver; 
 at least one turbo status indicator unit, adapted to indicate a current operating status of the turbo unit and/or turbo unit components, having a wireless turbo status transceiver; 
 wherein at least one of the turbo remote control unit and turbo status indicator unit is remote from the turbo unit, and wherein wireless communication occurs between at least two of the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver. 
 
     
     
       2. A powered air purifying respirator according to  claim 1 , wherein the electronic control transceiver, the turbo remote control transceiver and the turbo status transceiver are arranged as a closed loop network. 
     
     
       3. A powered air purifying respirator according to  claim 1 , wherein wireless communication between the transceivers is in the range 20 to 50 kHz. 
     
     
       4. A powered air purifying respirator according to  claim 1 , wherein wireless communication between the transceivers is in the range 100 to 500 THz. 
     
     
       5. A powered air purifying respirator according to  claim 1 , wherein wireless communication between the transceivers is in the range 0.3 to 10 GHz. 
     
     
       6. A powered air purifying respirator according to  claim 5 , wherein information is transmitted in a frequency band centred around 868 MHz, 915 MHz, 2.45 GHz or 5.8 GHz. 
     
     
       7. A powered air purifying respirator according to  claim 1 , wherein the turbo remote control unit and the turbo status indicator unit are adapted to be used by a wearer of the powered air purifying respirator. 
     
     
       8. A powered air purifying respirator according to  claim 6 , wherein the turbo remote control unit and the turbo status indicator unit are adapted to be remote from a wearer of the powered air purifying respirator. 
     
     
       9. A powered air purifying respirator according to  claim 1 , wherein the current operating status of the turbo unit is indicated by at least one of a visual indicator, an audible indicator and a vibration indicator. 
     
     
       10. A powered air purifying respirator according  claim 1 , wherein at least one turbo status indicator unit and the turbo remote control unit are located in a single housing. 
     
     
       11. A powered air purifying respirator according  claim 1 , wherein the turbo unit further comprises a housing in which the turbo unit components are housed, having external data inputs and one or more additional turbo status indicators provided thereon.

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